Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /home/desloothaak/public_html/views/frontend/pages/booking-select.php:13 Stack trace: #0 /home/desloothaak/public_html/views/frontend/pages/booking-select.php(13): in_array(4, NULL) #1 /home/desloothaak/public_html/models/View.php(5): require('/home/deslootha...') #2 /home/desloothaak/public_html/controllers/BookingController.php(43): View::frontend('pages/booking-s...', Array) #3 [internal function]: BookingController::bookingSelect('huisje-1', '1') #4 /home/desloothaak/public_html/vendor/bramus/router/src/Bramus/Router/Router.php(476): forward_static_call_array(Array, Array) #5 /home/desloothaak/public_html/vendor/bramus/router/src/Bramus/Router/Router.php(440): Bramus\Router\Router->invoke('BookingControll...', Array) #6 /home/desloothaak/public_html/vendor/bramus/router/src/Bramus/Router/Router.php(287): Bramus\Router\Router->handle(Array, true) #7 /home/desloothaak/public_html/index.php(39): Bramus\Router\Router->run() #8 {main} thrown in /home/desloothaak/public_html/views/frontend/pages/booking-select.php on line 13